| UNION ENGINEERING DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILE (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WHARF TRADING LIMITED | Private company limited by shares | Dissolved |
| CONCORD UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION KING SHIPPING LIMITED | Private company limited by shares | Dissolved |
| BEST UNION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| WANG FU (UNION) CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| NOBLE UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL UNION RESOURCES LIMITED | Private company limited by shares | Live |
| UNION TECH CIRCUIT LIMITED | Private company limited by shares | Live |
| UNION TELECOM LIMITED | Private company limited by shares | Dissolved |
| RICH UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION FUTURE LIMITED | Private company limited by shares | Live |
| UNION STAR INVESTMENT LIMITED | Private company limited by shares | Live |
| KIND UNION LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HONOUR TRADING LIMITED | Private company limited by shares | Dissolved |
| THREE UNION (INTERNATIONAL) ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION COSMOS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION HARMONY LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INVESTMENT CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| UNION TRINITY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION PLASTIC & ELECTRONIC PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| UNION VAST INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY LIMITED | Private company limited by shares | Dissolved |
| UNION FORTRESS LIMITED | Private company limited by shares | Dissolved |
| UNION THEME LIMITED | Private company limited by shares | Live |
| UNION ETERNITY LIMITED | Private company limited by shares | Dissolved |
| UNION EXCHANGE LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE LIMITED | Private company limited by shares | Dissolved |
| UNION NICE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION MEDIA DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIONEX TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| TIME UNION PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION VENUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION SENSE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION CAMERA ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION VENUS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| BEST UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| HARBOUR UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION WEAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION WEAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION WEALTH TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SMART INTERNATIONAL UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNION WIN MOTOR SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SONG UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CITY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| LAND UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TARGET ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SILVER UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR GARMENTS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION LIMITED | Private company limited by shares | Dissolved |
| UNION COMPUTER INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION ASIA LIMITED | Private company limited by shares | Live |
| RICH UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| BEST UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| PACIFIC UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ROYAL UNION LIMITED | Private company limited by shares | Dissolved |
| MAX UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION ART HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION LINK (TECHNOLOGY) COMMUNICATION LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION FURNITURE LIMITED | Private company limited by shares | Live |
| UNION VAST INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION LOYAL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION GLORY CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION LOYAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION LOYAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GLORY TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| PROGRESS UNION LIMITED | Private company limited by shares | Dissolved |
| MEGA UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION GODOWN COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| DELTA UNION LIMITED | Private company limited by shares | Dissolved |
| DELTA UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WEAL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION PRIVILEGE LIMITED | Private company limited by shares | Dissolved |
| UNION ETERNITY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION ETERNITY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHAMPION UNION MOTORS LIMITED | Private company limited by shares | Live |
| UNIONWAY PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION LIGHT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SUMMIT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WANG FU UNION ESTATE AGENCY LIMITED | Private company limited by shares | Dissolved |
| UNION JOIN HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SUN UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION SUMMIT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PRO UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILES FIBRE COMPANY LIMITED | Private company limited by shares | Dissolved |
| DELTA UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| DELTA UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION KING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |